Prosperity Bancshares, Inc.

What they do

The company derives substantially all of its revenue and income from its bank subsidiary, Prosperity Bank, which provides financial products and services to businesses and consumers across Texas and Oklahoma. As of December 31, 2025, the Bank operated 283 full-service banking locations, concentrated in Houston (62), Dallas/Fort Worth (61), West Texas (45), South Texas (33) and Central Texas (31), plus locations in East Texas, Bryan/College Station and Oklahoma. The company says it operates under a community banking philosophy, targeting a varied customer base across industries including professional services, manufacturing, tourism, recreation, petrochemicals, farming and ranching.

Revenue drivers

• Net interest income — The company states its earnings are significantly dependent on net interest income, the difference between interest earned on loans, investments and other earning assets and interest paid on deposits and borrowings; its second quarter 2026 net interest margin was 3.47%, up 29 basis points from the second quarter of 2025.
• Banking operations across Texas and Oklahoma markets — Revenue is generated from the communities served by its banking centers, with lending risk spread across industries such as professional service firms, manufacturing, tourism, petrochemicals, farming and ranching; Houston and Dallas/Fort Worth together accounted for 123 of 283 banking locations at year-end 2025.
• Deposit franchise — The company cites its stable customer relationships as a source of low cost of funds; at June 30, 2026, noninterest-bearing deposits were $10.7 billion, or 32.9% of total deposits.
• Acquisitions — Growth has come through internal growth, mergers and acquisitions and new banking centers; completed deals since 2016 include Tradition (2016, 7 centers), LegacyTexas (2019, 42 centers), First Bancshares of Texas (2023, 16 centers) and Lone Star (2024, 5 centers), with the Stellar Bancorp merger completed July 1, 2026.

Recent performance

For the quarter ended June 30, 2026, Prosperity reported net income of $168.6 million, or $1.67 per diluted common share, compared with $135.2 million and $1.42 in the same period of 2025. Excluding a net gain of $8.2 million from the exchange and conversion of Visa Class B-2 stock and the sale of investment securities, partially offset by $755 thousand of merger-related expenses, net income was $162.7 million and diluted EPS was $1.62, an increase of 20.4% and 14.1% respectively over the second quarter of 2025. Second quarter 2026 net interest margin was 3.47%, up 29 basis points from the second quarter of 2025. Annualized return on second quarter average assets was 1.55%, return on average common equity was 8.14% and return on average tangible common equity was 15.48%. Nonperforming assets remained low at 0.34% of second quarter average interest-earning assets, and the company repurchased 200 thousand shares during the second quarter and 1.0 million shares during 2026.

Strategy

The company has grown through a combination of internal growth, mergers and acquisitions and the opening of new banking centers. It completed the merger of Stellar Bancorp, Inc. into Prosperity Bancshares and Stellar Bank into Prosperity Bank on July 1, 2026; Stellar Bank operated 52 banking offices, including its main office in Houston and offices in the Houston, Beaumont and East Texas areas and in Dallas. In connection with the mergers, Robert Franklin (former CEO of Stellar) and Joe Swinbank joined the Prosperity Bancshares Board, and Ray Vitulli (former CEO of Stellar Bank) and Pat Parsons joined the Prosperity Bank Board. Earlier in 2026, American Bank Holding Corporation merged into Prosperity Bancshares on January 1, 2026 and Southwest Bancshares, Inc. merged into Prosperity Bancshares on February 1, 2026. Management emphasizes a community banking philosophy, responsive customer service, stringent cost controls and a low cost of funds.

Risks

• Interest rate risk — The majority of the company's assets are monetary in nature, so changes in interest rates can affect net interest income and the valuation of assets and liabilities, with the company noting the Federal Reserve began raising rates in 2022 in response to inflation.
• Acquisition integration risk — The company cites risks tied to the Stellar acquisition and the American and Southwest acquisitions, including diversion of management's time, unexpected transaction costs, failure to realize expected revenue synergies, deposit and customer attrition, and customer and employee loss.
• Credit concentration in real estate — The company identifies concentration of its loan portfolio in loans collateralized by residential and commercial real estate as a risk, along with increased credit risk if the mix of commercial, consumer and real estate loans changes materially.
• Local economic and commodity exposure — The company cites changes in local economic and business conditions, including fluctuations in the price of oil, natural gas and other commodities, which can affect customers' ability to repay loans or the value of related collateral.

Outlook

Management said the July 1, 2026 completion of the Stellar merger adds 52 banking offices in Houston, Beaumont, East Texas and Dallas, and that former Stellar executives and directors have joined the Prosperity Bancshares and Prosperity Bank boards. David Zalman, Senior Chairman and CEO, cited Texas as the second largest state economy by GDP and roughly the 8th largest economy in the world, and described Oklahoma as smaller but stable and heavily influenced by oil and gas. The company continues to face the integration of the American, Southwest and Stellar acquisitions, and its filings note the risks that the businesses may not be integrated successfully or that expected revenue synergies may not be fully or timely realized.